atomic.h

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/*===========================================================================
     _____        _____        _____        _____
 ___|    _|__  __|_    |__  __|__   |__  __| __  |__  ______
|    \  /  | ||    \      ||     |     ||  |/ /     ||___   |
|     \/   | ||     \     ||     \     ||     \     ||___   |
|__/\__/|__|_||__|\__\  __||__|\__\  __||__|\__\  __||______|
    |_____|      |_____|      |_____|      |_____|

--[Mark3 Realtime Platform]--------------------------------------------------

Copyright (c) 2012 - 2019 m0slevin, all rights reserved.
See license.txt for more information
===========================================================================*/
#pragma once

#include "kerneltypes.h"
#include "mark3cfg.h"
#include "ithreadport.h"
#include "kerneldebug.h"

namespace Mark3
{
namespace Atomic
{
    template <typename T> T Set(T* pSource_, T val_)
    {
        KERNEL_ASSERT(nullptr != pSource_);

        const auto cs = CriticalGuard{};
        auto ret       = *pSource_;
        *pSource_ = val_;
        return ret;
    }

    template <typename T> T Add(T* pSource_, T val_)
    {
        KERNEL_ASSERT(nullptr != pSource_);

        const auto cs = CriticalGuard{};
        auto ret = *pSource_;
        *pSource_ += val_;
        return ret;
    }

    template <typename T> T Sub(T* pSource_, T val_)
    {
        KERNEL_ASSERT(nullptr != pSource_);

        const auto cs = CriticalGuard{};
        auto ret = *pSource_;
        *pSource_ -= val_;
        return ret;
    }

    bool TestAndSet(bool* pbLock);
} // namespace Atomic
} // namespace Mark3